Messier Objects: Guide to the Bright Galaxies, Nebulae and Clusters Listed in the Messier Catalogue

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Messier 91 (M91) is a barred spiral galaxy located in the Virgo Cluster, in the constellation Coma Berenices. The galaxy has an apparent magnitude of 11 and lies at an approximate distance of 63 million light years from Earth. Its designation in the New General Catalogue is NGC 4548.